EP 2348504 A4 20120516 - ENCODING AND DECODING METHOD AND DEVICE
Title (en)
ENCODING AND DECODING METHOD AND DEVICE
Title (de)
KODIERUNGS- UND DEKODIERUNGSVERFAHREN UND -VORRICHTUNG
Title (fr)
PROCÉDÉ ET DISPOSITIF DE CODAGE ET DE DÉCODAGE
Publication
Application
Priority
CN 2009071051 W 20090327
Abstract (en)
[origin: EP2348504A1] The present invention relates to information processing technologies and discloses an encoding and decoding method and device to solve the poor decoding quality problem. The technical solution of the present invention includes: encoding each sample of an input signal to generate an encoded signal of a core layer; comparing residuals of all or a part of the samples of the input signal with encoding thresholds, where the residuals are generated by core layer encoding, and performing encoding according to comparison results to generate an encoded signal of an enhancement layer; and writing the encoded signal of the core layer and the encoded signal of the enhancement layer into a bitstream to generate an encoded signal of the input signal. Embodiments of the present invention may be applied in the process of encoding and decoding a narrowband, wideband, ultra-wideband, or full-band speech/audio signal by using the adaptive differential pulse code modulation (ADPCM) or pulse code modulation (PCM) encoding method.
IPC 8 full level
G10L 19/14 (2006.01); G10L 19/24 (2013.01); G10L 19/02 (2006.01); G10L 19/032 (2013.01)
CPC (source: EP US)
G10L 19/24 (2013.01 - EP US); G10L 19/032 (2013.01 - EP US)
Citation (search report)
- [IY] GB 2073554 A 19811014 - WESTERN ELECTRIC CO
- [XA] WO 2005036528 A1 20050421 - AGENCY SCIENCE TECH & RES [SG], et al
- [Y] EP 1619664 A1 20060125 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [XP] LEI MIAO HUAWEI TECHNOLOGIES CHINA JONGMO SUNG ETRI KOREA ET AL: "G.722-SWB: Proposed draft specification for the superwideband embedded extension for ITU-T G.722;C 463", ITU-T DRAFTS ; STUDY PERIOD 2009-2012, INTERNATIONAL TELECOMMUNICATION UNION, GENEVA ; CH, vol. Study Group 16 ; 10/16, 7 October 2010 (2010-10-07), pages 1 - 89, XP017452962
- [AP] LEI MIAO ET AL: "G.711.1 Annex D and G.722 Annex B - New ITU-T superwideband codecs", ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP), 2011 IEEE INTERNATIONAL CONFERENCE ON, IEEE, 22 May 2011 (2011-05-22), pages 5232 - 5235, XP032001862, ISBN: 978-1-4577-0538-0, DOI: 10.1109/ICASSP.2011.5947537
- See references of WO 2010108332A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2348504 A1 20110727; EP 2348504 A4 20120516; EP 2348504 B1 20140108; CN 102239518 A 20111109; CN 102239518 B 20121121; US 2011181449 A1 20110728; US 2011187564 A1 20110804; US 8134484 B2 20120313; US 8436754 B2 20130507; WO 2010108332 A1 20100930
DOCDB simple family (application)
EP 09842069 A 20090327; CN 2009071051 W 20090327; CN 200980146905 A 20090327; US 201113086774 A 20110414; US 201113086780 A 20110414